Apparatus for trimming paper-hangings



UNITED STATES PATENT OEEicE.

ERASTUS BOOTHBY, OF SACO, ASSIGNOR TO HIMSELF AND CHARLES A. SHAW, OFBIDDEFORD, MAlNE.

APPARATUS FOR TRIMMING PAPER-HANGINGS.

Specification forming part of Letters Patent No. 441,764. dated October18, 1864.

To all whom, it may concern.-

Be it known that l, ERAs'rUs BooTHBY, of 1 Saco, in the county of Yorkand State of Maine, have invented an Improved Machine for TrimmingPaper-Hangings 5 and I hereby declare that the following is a full,clear, and exact description of the same, reference being had to theaccompanying drawings, of which drawings- Figure 1 is aside elevation.end elevation or front view. View looking from the rear. Fig. 4 is ahorizintal section. Fig. 5 is a horizontal section of a part of theface-plate and spring.

Corresponding letters of reference refer to carresponding parts. y

Itis well known to all practical paperhangers that room-paper orpaperlhan gings, before being laid, require trimming on one or bothedges of the rolls. This is usually done by unrollingit, and cutting offthe edge by means i of common paper-shears, and is a lengthy, lalborious, and costly operation, which in that way can be but imperfectlyperformed at the best; besides, tine enameled papers, or those whichhave a glazing or nish on them, get doubled up, and the enamel crackedor shattered so as to spoil the paper.

My invention consists in the construction of an improved machine forcutting oft' or trimming the edges of paper-hangings by means of whichit can be done in the roll, and in less than one-tenth of the timeusually required, and without the slightest injury to the paper. Itsnature and operation will be understood by the following description InFig. 1, K is the body of the machine,which is trough-shapedorsemicylindrical, as shown in Fig. 3, and so formed as to hold the rollof paper F while the same is being trimmed. The body K has clamp-jaws a'by which the machine is attached to the side of a common table, E, bythe thumb-screws o o. On one end of the body or trough K the head-pieceor thimble B, having a facefplate or wide flange, C, is arranged. Thishead-pieceis kept in position by the screw m, Fig. 4, which passesthrough the head into the groove n, so as to allow the head to be freelyrotated, but not to move longitudinally. On the side of the body K, Fig.1, is a wheel, A, having a handle, H, by which the machine is operated.This wheel Fig. 2 is an Fig. 3 is an end works on a hub on the body K,being kept in place by the screw y, and has teeth or a mitergear, whichengages a similar gear or set ot' teeth on the thimbleB at the back partof the plate O, as shown. On this faceplate Fig. 2, is arranged a knife,D, which is so attached to the plate by the screw z that its oppositeend can be moved vertically, and it is also confined by the clamp s,which prevents it being moved too far, either vertically or laterally. Acoiled spring, G, is attached to the plate C by one end atj, the otherend being connected with thc knife, as shown, the plate being grooved orsunk under the spring so as to let it partly into its face. The clamp shas a shoulder or jog at 19 on the side next the knife,

so that when the knife is raised above thehole Q, as in Fig. 2, and ispushed slightly to one n side, it will be caught on and held up by Itheshoulder. This is important, as the knifehas to be kept away from thepaper when the roll is being put into the machine.

The operation of my machine is as follows: After the machine is firmlyattached to the side of a table, the knife is raised, as shown in Fig.2. The roll of paper to be trimmed is then put into the machine, asshown in Fig. 1, with the edge or cud which is to be cut oft' projectingthrough the hole Q in the face-plate C, as shown at fi. The knife D isthen let down into contact with the paper, and the head-piece caused torotate rapidly by means of the driving-wheel A. As the spring Gconstantly operates to draw the knife forcibly downward onto thepaper,when the head-piece is rotated, the knife is carried around theroll with a draw-cut,77 cutting deeper at each revolution of thethimble, until the paper is completely severed. It will be understoodthat the roll of paper does not rotate, but is kept rmly in position inthe trough K by the hand or by a small elastic strap, I, one end ofwhich may be attached to the screw l and the other end to a similarscrew on the opposite side of the machine, as shown at I. The hole Q,Fig. 2, should not be much larger than the roll of paper being trimmed,and to provide for different sizes of rolls, I tit a set of washers oradjustable diaphragms of different sizes to the interior of the body K,under the part B, and use lifts 7 in t-he bottom of the trough K at theopposite end to bring the roll of paper'at that part up to a level withtho end which is in the Washer bein g used. These Washers and lif'ts Ihave not shown in my drawings or model, as they are very seldom requiredin actual use, which will apply to the strap I as Well.l

Having thus described my machine, I claiml. The combination of arotating head piece which revolves around a portion of the paper orarticle to be cut, a knife for cutting' the paper, and a spring;` foractuating the knife, f

with trough or body K and Wheel A, or their equivalents, substantiallyin the manner and for the purposes set forth and specilied.

2. In combination with a rotating head-piece, knife, and spring, aclamp, s, constructed and used substantially in the manner and for thepurposes set forth and described.

ERAS'IUS BOOTHBY.

Witnesses:

OHARLEs A. SHAW, HORACE BACON.

